{
  "$schema": "robofaults-fault-record/v0",
  "kind": "error",
  "brand": "eufy",
  "page_en": "https://robofaults.com/eufy/error-20/",
  "page_es": "https://robofaults.com/es/eufy/error-20/",
  "code": "20",
  "slug": "error-20",
  "device_type": "vacuum",
  "name_en": "Laser sensor blocked",
  "name_es": "Sensor láser bloqueado",
  "badge": "ERR 20",
  "severity": "warn",
  "severity_note_en": "robot's LiDAR view is obstructed and navigation pauses until it clears",
  "severity_note_es": "la vista del LiDAR está obstruida y la navegación se pausa hasta despejarla",
  "series": [
    "X8",
    "LR/L35"
  ],
  "tools_en": "clean dry cloth",
  "tools_es": "paño limpio y seco",
  "time_min": 5,
  "difficulty": "easy",
  "safety": "none",
  "safety_note_en": "",
  "safety_note_es": "",
  "meaning_en": "Error 20 means the <b>laser sensor is blocked</b> — something is obstructing the LiDAR's view or reflecting its beam. Move the robot away from surrounding obstacles and mirror-like surfaces and restart.",
  "meaning_es": "El error 20 significa que el <b>sensor láser está bloqueado</b> — algo obstruye la vista del LiDAR o refleja su haz. Aleja el robot de los obstáculos cercanos y de las superficies tipo espejo y reinicia.",
  "causes": [
    {
      "title_en": "Objects crowding the turret",
      "title_es": "Objetos rodeando la torreta",
      "detail_en": "Parked hard against furniture or curtains, the LiDAR sees a wall in every direction — eufy's fix is to remove the obstacles or relocate the robot.",
      "detail_es": "Pegado a muebles o cortinas, el LiDAR ve una pared en todas direcciones — la solución de eufy es retirar los obstáculos o recolocar el robot.",
      "likelihood": "most_common"
    },
    {
      "title_en": "Reflective surfaces bouncing the beam",
      "title_es": "Superficies reflectantes que rebotan el haz",
      "detail_en": "eufy's article calls out reflections — mirrors, glass doors and polished metal confuse the ranging readings.",
      "detail_es": "El artículo de eufy menciona los reflejos — espejos, puertas de cristal y metal pulido confunden las lecturas de distancia.",
      "likelihood": "common"
    },
    {
      "title_en": "Dust film over the laser window",
      "title_es": "Capa de polvo sobre la ventana del láser",
      "detail_en": "The same dust that causes Error 19 can read as a permanent obstruction — wipe the window while you're there.",
      "detail_es": "El mismo polvo que causa el error 19 puede leerse como una obstrucción permanente — limpia la ventana ya que estás.",
      "likelihood": "common"
    }
  ],
  "steps": [
    {
      "title_en": "Move the robot to open floor",
      "title_es": "Mueve el robot a suelo despejado",
      "detail_en": "Relocate it away from furniture, curtains and anything within a hand's width of the turret.",
      "detail_es": "Aléjalo de muebles, cortinas y cualquier cosa a un palmo de la torreta."
    },
    {
      "title_en": "Wipe the laser window",
      "title_es": "Limpia la ventana del láser",
      "detail_en": "Clean the turret's window with a dry cloth so dust can't read as an obstruction.",
      "detail_es": "Limpia la ventana de la torreta con un paño seco para que el polvo no se lea como una obstrucción."
    },
    {
      "title_en": "Restart and manage reflections",
      "title_es": "Reinicia y controla los reflejos",
      "detail_en": "Start again; if the error repeats near mirrors or glass, cover them, block the zone in the app, or keep the robot's start point away from them.",
      "detail_es": "Vuelve a empezar; si el error se repite junto a espejos o cristales, cúbrelos, bloquea la zona en la app o aleja de ellos el punto de inicio."
    }
  ],
  "parts": [],
  "related": [
    "18",
    "19"
  ],
  "sources": [
    {
      "label_en": "eufy Support — RoboVac stops with Error 18/19/20 (L35, LR30 series, LR20)",
      "label_es": "Soporte de eufy — El RoboVac se detiene con los errores 18/19/20 (L35, series LR30 y LR20)",
      "url": "https://service.eufy.com/article-description/What-if-my-RoboVac-stops-with-Error-18-Error-19-Error-20-for-L35-LR30-series-and-LR20",
      "kind": "official"
    },
    {
      "label_en": "eufy Support — X8/LR20/LR30/L35 series voice alerts and solutions",
      "label_es": "Soporte de eufy — Alertas de voz y soluciones de las series X8/LR20/LR30/L35",
      "url": "https://service.eufy.com/article-description/X8-Series-RoboVac-Voice-Alerts-and-Solution",
      "kind": "official"
    }
  ],
  "confidence": "official",
  "last_verified": "2026-07-06"
}